"No, the Petition does NOT declare that "climate change is a hoax."
From Dave Burton, IPCC AR5 WGI expert reviewer
https://www.quora.com/profile/Dave-Burton-2
"That is a false statement, invented by Snopes' Alex Kasprak, who was playing straw-man games. The actual petition says nothing like that"
The Global Warming Petition attests to our conclusion that:
"There is no convincing scientific evidence that human release of carbon dioxide, methane, or other greenhouse gases is causing or will, in the foreseeable future, cause catastrophic heating of the Earth's atmosphere and disruption of the Earth's climate. Moreover, there is substantial scientific evidence that increases in atmospheric carbon dioxide produce many beneficial effects upon the natural plant and animal environments of the Earth.”
"I and 31,486 other American scientists, including engineers in relevant disciplines, really DID sign the Global Warming Petition.
That is all still true. Indeed, evidence supporting that statement has continued to accumulate, in the ≈21 years since it was written."
List of Signers By Name